Kinetic route to helicity-constrained decayThrough two-dimensional, three-velocity-component particle-in-cell simulations of freely decaying subion turbulence, intermittent localized regions with E · B ≠ 0 are…Dion Li·Jul 2, 2026SaveLearn
The Geometry of Flux Surfaces with Quasi-Poloidal SymmetryQuasi-poloidal (QP) magnetic fields have desirable properties for confining plasma: no radial drift of guiding centres (with positive implications for neoclassical transport), zero Pfirsch-Schlüter…Rishin Madan, Wrick Sengupta, Elizabeth J. Paul et al.·Jul 2, 2026SaveLearn
Computer simulations of the Stark effect in the helium-beta complex of krypton in ICF conditionsThere is an ongoing interest in using spectroscopy in inertial confinement fusion (ICF) experiments, where dopants such as krypton can provide vital information about the temperature and density of…G. Pérez-Callejo, E. Stambulchik, R. Florido et al.·Jul 2, 2026SaveLearn
Energy transfer and conversion in Strongly Anisotropic Magnetohydrodynamic TurbulenceIn homogeneous magnetohydrodynamic (MHD) turbulence without a background magnetic field driven by mechanical forces, an exact decomposition of the energy fluxes (D. Capocci et al., Journal of Plasma…Damiano Capocci, Sean Oughton, Moritz Linkmann·Jul 1, 2026SaveLearn
Development of a thin-target hard X-ray bremsstrahlung detection system to study confined runaway electrons in Aditya-U TokamakA specially shielded CdTe detector based hard X-ray (HXR) monitoring system equipped with a lead collimator has been developed and installed on the Aditya-U tokamak to investigate the dynamics of…Suman Dolui, Santosh Pandya, J. Kumar et al.·Jul 1, 2026SaveLearn
Reexamination of collisional ionization cross sections including double photoionization processesCollisional ionization (CI) cross sections in dense plasmas remain difficult to constrain due to uncertainties in plasma conditions and the overlapping spectral signatures of competing atomic…Lucas Ansia, Pedro Velarde, Marta Fajardo et al.·Jul 1, 2026SaveLearn
Improved Particle Confinement with Resonant Magnetic Perturbations in DIII-D Tokamak H-Mode PlasmasExperiments on the DIII-D tokamak have identified a novel regime in which applied resonant magnetic perturbations (RMPs) increase the particle confinement and overall performance. This Letter details…N. C. Logan, Q. Hu, C. Paz-Soldan et al.·Jul 1, 2026SaveLearn
Real-time virtual circuits for plasma shape control via neural network emulatorsReliable position and shape control in tokamak plasmas requires accurate real-time regulation of several strongly coupled shape parameters. The control vectors that disentangle these couplings,…Alasdair Ross, George K. Holt, Kamran Pentland et al.·Jul 1, 2026SaveLearn
Spatiotemporal Properties of Compressible Magnetohydrodynamic Turbulence from Space PlasmaPrevious studies have established that a weak-to-strong transition occurs in Alfvenic magnetohydrodynamic (MHD) turbulence as energy cascades from large to small scales. However, the spatiotemporal…Siqi Zhao, Huirong Yan, Terry Z. Liu et al.·Jul 1, 2026SaveLearn
Nonlinear evolution of perturbatively driven kinetic instabilities far from marginal stabilityKinetic instabilities develop when a system's distribution function deviates from thermal equilibrium in such a way that allows free energy from that distribution to drive resonant modes. These…Emma G. Devin, Vinícius N. Duarte·Jul 1, 2026SaveLearn
Plasma double layer development during high power EUV exposureThe development of electrostatic plasma double layer (DL) at the boundary of Extreme Ultra Violet (EUV) exposed and un-exposed region in the bulk volume has been confirmed by 3DPIC (Particle-In-Cell)…Manis Chaudhuri, Pavel Krainov, Dmitry Astakhov et al.·Jun 30, 2026SaveLearn
Effect of externally applied resonant magnetic perturbations on resistive tearing modesStatic resonant magnetic perturbations (RMPs) generated by saddle coil current have been applied in J-TEXT tokamak experiments in order to study their effects on tearing mode instabilities. With…Qiming Hu, Q. Yu, Bo Rao et al.·Jun 30, 2026SaveLearn
Nonlinear modeling of the scaling law for the m/n=3/2 error field penetration thresholdThe scaling law for the n=2 error field (EF) penetration threshold is predicted numerically based on nonlinear single-fluid and two-fluid modeling using the TM1 code. The simulated penetration…Q. Hu, N. C. Logan, J. -K. Park et al.·Jun 30, 2026SaveLearn
The Role of Edge Resonant Magnetic Perturbations in Edge-Localized-Mode Suppression and Density Pump-out in low-collisionality DIII-D PlasmasTwo-fluid nonlinear MHD simulations using the TM1 code demonstrate that the formation of magnetic islands at the top and bottom of the H-mode pedestal, together with the strong screening of resonant…Q. M. Hu, R. Nazikian, B. A. Grierson et al.·Jun 30, 2026SaveLearn
Nonlinear Landau Collisions Without Collision TensorsFar-from-equilibrium plasmas require nonlinear Coulomb collisions, but direct three-dimensional Hermite discretization of the Landau operator needs an impractical dense tensor. By porting quantum…R. Jorge, B. Herfray, C. Vega et al.·Jun 30, 2026SaveLearn
The science of compressional heating on the LM26 magnetized target fusion experimentThe Lawson Machine 26 (LM26) at General Fusion has demonstrated compressional heating of a spherical tokamak deuterium plasma as it was compressed by an imploding solid lithium liner. Results from…S. J. Howard, D. P. Brennan, K. Epp et al.·Jun 30, 2026SaveLearn
Mechanism Behind the Recombination Requirement for Benign Termination of Relativistic Electron BeamsWe present a first-principles explanation of the recombination requirement for benign termination of relativistic electron (RE) beams in tokamaks. Kinetic modeling including neutrals shows that the…George Su, Carl Friedrich Benedikt Zimmermann, Carlos Paz-Soldan et al.·Jun 30, 2026SaveLearn
An Enhanced RPA-LDA Model for Ion Stopping Power from Cold Matter to High-Energy Density Plasmas: A Unified, Open-Source FrameworkWe present an enhanced random-phase-approximation--local-density-approximation (e-RPA-LDA) model for the stopping power of ions that is valid over a wide range of conditions, from cold solids through…Thomas A. Mehlhorn, Ming Feng Gu, Igor Golovkin·Jun 29, 2026SaveLearn
Fusion-power amplification by compressive hydrodynamic fluctuationsCompressive fluctuations in hot plasma, including acoustic waves and compressible turbulence, increase the rate of fusion reactions. This power amplification comprises hydrodynamic,…Henry Fetsch, Nathaniel J. Fisch·Jun 29, 2026SaveLearn
Kinetic energy from the cubic sum rule of the dynamic structure factorThe third frequency moment sum rule of the dynamic structure factor S(q,ω) is explored for the first time as an alternative estimator of the kinetic energy K of quantum many-body…Fotios Kalkavouras, Panagiotis Tolias, Sebastian Schwalbe et al.·Jun 29, 2026SaveLearn
Harnessing Toroidal Neutral Flows to Enhance Divertor Particle ExhaustIn 1991 Reiter et al. (1991 Plasma Phys. Control. Fusion 33 1579) considered the onerous exhaust requirements of ITER, and wrote: "The vacuum pumping problem of a fusion reactor will probably…M. Moscheni, A. Herrmann, J. D. Lore et al.·Jun 29, 2026SaveLearn
Boris and Exponential Integrators in the Theory of Particles Interacting with Magnetic TurbulenceThe interaction of electrically charged particles with magnetic fields is a fundamental problem in several areas of physics. An example is the motion of energetic particles through a magnetized…Andreas Shalchi·Jun 29, 2026SaveLearn
The FreeGSNKE Pulse Design Tool (FPDT): a computational framework for evolutive plasma scenario and control designWe present the FreeGSNKE Pulse Design Tool (FPDT), an open-source, Python-based computational framework that enables in silico testing and predictive design of tokamak plasma scenarios and control…K. Pentland, N. C. Amorisco, A. Ross et al.·Jun 29, 2026SaveLearn
Line-Tied Flux Rope Relaxation and Reconnection: A 3D Kinetic Case StudyMagnetic flux ropes are ubiquitous magnetic structures found in plasmas ranging from astrophysical to laboratory. We employ a newly-developed parallel-kinetic-perpendicular-moment (PKPM) model to…Joshua Pawlak, James Juno, Jason M. TenBarge·Jun 29, 2026SaveLearn
The Effect of Magnetization on Electron Heating in Low-Density Ultracold Neutral PlasmasUltracold neutral plasmas provide a useful system for studying extreme parameter regimes plasma physics in an accessible laboratory setting. The parameter space of plasma physics can be characterized…Ryan C. Baker, Bridget O'Mara, Jacob L. Roberts·Jun 29, 2026SaveLearn